Kustom Groovebass is very well liked around here, its in the $500 range. Riksmusik.com has the GK1001RB-II for $600, which is another very popular amp (though it'll sound worlds different from the Kustom or the Eden probably).

I have a really old Nemesis 115 combo, has served me well for four years. Yeah, it doesn't really cut through in rock, but for all other things it works beautifully. If you need something that competes with Marshall stacks, GK or Hartke are famous for bringing bass out of the shadows.